"As gripping as a good thriller." --The Washington Post

Unpack the science of secrecy and discover the methods behind cryptography--the encoding and decoding of information--in this clear and easy-to-understand young adult adaptation of the national bestseller that's perfect for this age of WikiLeaks, the Sony hack, and other events that reveal the extent to which our technology is never quite as secure as we want to believe.

Coders and codebreakers alike will be fascinated by history's most mesmerizing stories of intrigue and cunning--from Julius Caesar and his Caeser cipher to the Allies' use of the Enigma machine to decode German messages during World War II.

Accessible, compelling, and timely, The Code Book is sure to make readers see the past--and the future--in a whole new way.

"Singh's power of explaining complex ideas is as dazzling as ever." --The Guardian

Based on the true account of a boy's harrowing journey through the vast wilderness of the Katahdin Mountains, Lost on a Mountain in Maine is a gripping survival story for all ages.

Twelve-year-old Donn Fendler steps away from his Boy Scout troop for only a minute, but in the foggy mountains of Maine, a minute is all it takes. After hours of trying to find his way back, a nervous and tired Donn falls down an embankment, making it impossible for him to be found. One sleepless night goes by, followed by a second . . . and before Donn knows it, almost two weeks have passed, leaving him starving, scared, and delirious.

With rainstorms, black bears, and his fear of being lost forever, Donn's journey is a physically, mentally, and emotionally charged story told from the point of view of the boy who lived it.

This title supports the Common Core State Standards.

Hide-and-seek is a great game, but Nick always finds where Sally is hiding. And that's no fun! Enter the Cat in the Hat. His friend Gecko is an expert at hiding. Maybe Gecko can share some tips with the kids? So off they go to the jungle, where Gecko teaches them how to hide in plain sight—using camouflage! Kids won't be able to hide their delight in this rhymed Step 2 book based on an episode from the hit PBS Kids TV show The Cat in the Hat Knows a Lot About That! (Step 2 is a Step into Reading title for children who recognize familiar words and sound out new words with aural and visual cues. Step 2 books have simple stories, basic vocabulary, and short sentences.)

n November 12, 2002, Dr. John Chambers of the NASA Ames - search Center gave a seminar to the Astrobiology Group at the OUniversity of Washington. The audience of about 100 listened with rapt attention as Chambers described results from a computer study of how planetary systems form. The goal of his research was to answer a dec- tively simple question: How often would newly forming planetary systems produce Earth-like planets, given a star the size of our own sun? By “Ear- like” Chambers meant a rocky planet with water on its surface, orbiting within a star’s “habitable zone. ” This not-too-hot and not-too-cold inner - gion, relatively close to the star, supports the presence of liquid water on a planet surface for hundreds of million of years—the time-span probably n- essary for the evolution of life. To answer the question of just how many Earth-like planets might be spawned in such a planetary system, Chambers had spent thousands of hours running highly sophisticated modeling p- grams through arrays of powerful computers. x Preface to the Paperback Edition The results presented at the meeting were startling. The simulations showed that rocky planets orbiting at the “right” distances from the central star are easily formed, but they can end up with a wide range of water c- tent.

Don’t miss The Mortal Instruments: City of Bones, now a major motion picture. Discover this first installment of the internationally bestselling Mortal Instruments series and “prepare to be hooked” (Entertainment Weekly).

Get a behind-the-scenes look at the making of The Mortal Instruments: City of Bones movie with this official companion book. This fan favorite features full-color photos from the set, designers’ sketches, interviews with the cast and crew, and more! From the screenwriting process to the casting decisions to the director’s vision, this definitive book is a must-have for fans of the blockbuster film!

Bright white teeth. Straight leg bones. Awkwardly contorted arm bones. On a hot summer day in 2005, Dr. Douglas Owsley of the Smithsonian Institution peered into an excavated grave, carefully examining the fragile skeleton that had been buried there for four hundred years. “He was about fifteen years old when he died. And he was European,” Owsley concluded. But how did he know? Just as forensic scientists use their knowledge of human remains to help solve crimes, they use similar skills to solve the mysteries of the long-ago past. Join author Sally M. Walker as she works alongside the scientists investigating colonial-era graves near Jamestown, Virginia, as well as other sites in Maryland. As you follow their investigations, she'll introduce you to what scientists believe are the lives of a teenage boy, a ship's captain, an indentured servant, a colonial official and his family, and an enslaved African girl. All are reaching beyond the grave to tell us their stories, which are written in bone.

A corresponding exhibit, also called Written in Bone, opens at the Smithsonian National Museum of Natural History in February 2009.

A leaf can be a...shade spiller, mouth filler, tree topper, rain stopper. Find out about the many roles leaves play in this poetic exploration of leaves throughout the year.

Animals smooth and spiky, fast and slow, hop and waddle through the two hundred plus pages of the Caldecott Honor artist Steve Jenkins’s most impressive nonfiction offering yet. Sections such as “Animal Senses,” “Animal Extremes,” and “The Story of Life” burst with fascinating facts and infographics that will have trivia buffs breathlessly asking, “Do you know a termite queen can produce up to 30,000 eggs a day?” Jenkins’s color-rich cut- and torn-paper artwork is as strikingly vivid as ever. Rounding out this bountiful browsers’ almanac of more than three hundred animals is a discussion of the artist’s bookmaking process, an animal index, a glossary, and a bibliography. A bookshelf essential!

The New York Times bestseller that’s changing America’s diet is now perfect for younger readers

“What’s for dinner?” seemed like a simple question—until journalist and supermarket detective Michael Pollan delved behind the scenes. From fast food and big organic to small farms and old-fashioned hunting and gathering, this young readers’ adaptation of Pollan’s famous food-chain exploration encourages kids to consider the personal and global health implications of their food choices.

In a smart, compelling format with updated facts, plenty of photos, graphs, and visuals, as well as a new afterword and backmatter, The Omnivore’s Dilemma serves up a bold message to the generation that needs it most: It’s time to take charge of our national eating habits—and it starts with you.

THE MAGIC SCHOOL BUS PRESENTS THE HUMAN BODY is a photographic nonfiction companion book to the original bestselling title, THE MAGIC SCHOOL BUS INSIDE THE HUMAN BODY. INSIDE THE HUMAN BODY taught thousands of kids about the incredible systems that work together to make the human body function. what makes us who we are. MAGIC SCHOOL BUS PRESENTS THE HUMAN BODY will expand upon the original title with fresh, updated Common Core-aligned content about our amazing bodies. With vivid full-color photographs on each page and illustrations of the beloved Ms. Frizzle and her students, the Magic School Bus Presents series will enthrall a whole new generation of Magic School Bus readers.

Water can be a…
• Thirst quencher
• Kid drencher
• Cloud fluffer
• Fire snuffer

Find out about the many roles water plays in this poetic exploration of water throughout the year.

Dear axolotl: Why do you have feathers growing out of your head? Axolotl: They aren't feathers—they're gills! They let me breathe underwater.
Let's face it. Even as babies, we humans pay close attention to faces. Observing another person's features and expressions tells us whether they are happy, angry, excited, or sad. And when we look at an animal, it's hard not to imagine that its face is communicating human feelings. This isn't true, of course. Squinty eyes, an upturned mouth, or another odd expression is probably there because, in some way, it helps that animal survive.      Packed with many cool facts and visuals on where certain animals live and what they eat, this book captures twenty-five humorous—and very true—explanations of why animals look the way they do in order to exist in this world.

When Temple Grandin was born, her parents knew that she was different. Years later she was diagnosed with autism.

While Temple’s doctor recommended a hospital, her mother believed in her. Temple went to school instead.

Today, Dr. Temple Grandin is a scientist and professor of animal science at Colorado State University. Her world-changing career revolutionized the livestock industry. As an advocate for autism, Temple uses her experience as an example of the unique contributions that autistic people can make.

This compelling biography complete with Temple’s personal photos takes us inside her extraordinary mind and opens the door to a broader understanding of autism.

In this completely updated edition of Our Solar System, Seymour Simon takes young readers on a fascinating tour through space! With beautiful full-color photographs and spacecraft images, young readers will learn all about the beginning of the solar system, including the sun and the eight planets and their moons. This book includes a glossary and an index.

Seymour Simon knows how to explain science to kids and make it fun. He was a teacher for more than twenty years, has written more than 250 books, and has won multiple awards.

Supports the Common Core State Standards

Jeanne Bendick, through text and pictures, admirably succeeds in bringing to life the ancient Greek mathematician who enriched mathematics and all branches of science. Against the backdrop of Archimedes' life and culture, the author discusses the man's work, his discoveries and the knowledge later based upon it. The simple, often humorous, illustrations and diagrams greatly enhance the text.

Climb the tallest mountain, dive into the deepest lake, and navigate the longest river in Steve Jenkins' stunning new book that explores the wonders of the natural world. With his striking cut paper collages, Jenkins majestically captures the grand sense of scale, perspective and awe that only mother earth can inspire.